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A335 P9 / SA 335 P22 ASTM Standard Power Plant Economizer 6 Inches Diameter Sprial Welding

Zhangjiagang HuaDong Boiler Co., Ltd.
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Zhangjiagang HuaDong Boiler Co., Ltd.
Province/State: Jiangsu
Country/Region: China
Tel: 86-512-58666196
Contact Person:
Miss Sandy Chen

A335 P9 / SA 335 P22 ASTM Standard Power Plant Economizer 6 Inches Diameter Sprial Welding

Brand Name : HD BOILER
Model Number : Sprial fins economizer
Certification : ISO9001 , SGS , TUV , ASME , EN
Place of Origin : China
MOQ : 1 Set / Sets 10tons
Price : Negotiable
Payment Terms : L/C, T/T, Western Union
Supply Ability : 500 Tons per month
Delivery Time : 60 days
Packaging Details : Seaworthy Packing
Material : A335 P9 / SA 335 p22
Usage : Refinery
Type : Natural circulation
Structure : Hot / Water Tube
Dimension : 168mm x 7.11mm x18000
Output : Hot water / Steam
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A335 P9 / SA 335 p22 ASTM Standard 6 inches diameter sprial welding


1)Boiler economizers are heat exchange devices with finned tubes that heat a liquid, sometimes water, up to however sometimes doesn't exceed the boiling purpose of liquid.

2)We can manufacture three types of boiler economizer, bare tube economizer, H finned tube economizer and spiral finned tube economizer.

3)H-finned tube economizer is high efficient heat exchanger economizer which is consisted of H-finned tubes.

4)Compared with bare tube economizer, H-finned tube economizer can enlarge the heat exchange area and reduce the number of tubes.

5)It also can increase the flue gas flow area in order to reduce the flue gas flow speed and abrasion.
H-finned tube can be made as double H finned tubes , with high rigidness to fit long tube row.
6)The spiral finned economizer is a newly designed heat transfer equipment, consists of spiral fin tubes to overcome the serious abrasion and short service time.


DescriptionBoiler economizer
MaterialAlloy steel, Carbon steel, SA210C ,SA213T22, etc.
Material standardASTM, EN or ISO etc.

Min: 10 ton

Max.:1000 ton

Smelting Process:EF+LF + VD
ProcessMaterial→Ingot → Hot/Cold-Rolling→ Heat treatment (Normalizing+ tempering) → Inspection →rough machining→UT →2nd Heat treatment →finishing machining →Inspection
UT standardASTM A388 or EN10228, etc

Quality Control

1. Impact test and Strength calculation report with applied materials information.

2. 100%NDT(non-destructive inspection) report of steel plate, tube and electrode.

3. X-ray, γ-ray and liquid penetrant test inspection report (welding seam): to ensure the quality of the entire boiler.

4. Hydraulic test report: ensure the standard working pressure and safety.

Company profile

1Fabrication area of 400,000 square meters
2150 Engineers
3600 Coded welders
460 Licensed Inspectors(NDT Level-III instructors)
5Class-A Licenses for Design and Manufacture Boiler
6ISO 9001:2008 Quality System
7ASME Certificate of Power Boilers
8ASME 'S','U' and NB stamp authorization

Product Tags:

power plant economizer


economizer for boiler

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A335 P9 / SA 335 P22 ASTM Standard Power Plant Economizer 6 Inches Diameter Sprial Welding Images

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